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• 入れ子集合モデル/基本操作 は削除されています。
  • 1 (2011-02-04 (金) 06:21:10)
  • 2 (2011-02-04 (金) 06:33:44)
  • 3 (2011-02-07 (月) 02:42:08)
  • 4 (2011-10-09 (日) 19:16:38)
  • 5 (2011-10-14 (金) 23:08:50)
  • 6 (2013-08-17 (土) 09:07:15)

参照†

更新†

リーフを追加する†

• :objectを:target下に

  UPDATE 
    02_DIRECTORY Target
      INNER JOIN
    02_DIRECTORY Shift
      ON 
        Shift.R >= Target.R
  SET
    Shift.R = Shift.R + 2
  , Shift.L = CASE WHEN Shift.L > Target.L 
                THEN Shift.L + 2 
                ELSE Shift.L 
              END
  WHERE
    Target.DIRECTORY_ID = :target;
  
  INSERT INTO 02_DIRECTORY
  SELECT :object, R-2 AS L, R-1 AS R FROM 02_DIRECTORY WHERE DIRECTORY_ID = :target;

部分木を移動する†

• :objectを:target下に

  UPDATE 
    02_DIRECTORY Target
      INNER JOIN
    02_DIRECTORY Shift
      ON 
        Shift.R >= Target.R
      INNER JOIN
    02_DIRECTORY Object
      ON 
        Object.DIRECTORY_ID = :object
  SET
    Shift.R = Shift.R + (Object.R - Object.L + 1)
  , Shift.L = CASE WHEN Shift.L > Target.L 
                THEN Shift.L + (Object.R - Object.L + 1)
                ELSE Shift.L 
              END
  WHERE
    Target.DIRECTORY_ID = :target;
  
  UPDATE 
    02_DIRECTORY Target
      INNER JOIN
    02_DIRECTORY Object
      ON 
        Object.DIRECTORY_ID ='!'
      INNER JOIN
    02_DIRECTORY Shift
      ON 
        Shift.L >= Object.L
        AND
        Shift.R <= Object.R
  SET
    Shift.L = Target.R - (Object.R - Object.L + 1)
  , Shift.R = Target.R - 1
  WHERE
    Target.DIRECTORY_ID = :target;